CN105158082A - Auxiliary device for metal pipe high-temperature tension test and application method of auxiliary device - Google Patents
Auxiliary device for metal pipe high-temperature tension test and application method of auxiliary device Download PDFInfo
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- CN105158082A CN105158082A CN201510545763.9A CN201510545763A CN105158082A CN 105158082 A CN105158082 A CN 105158082A CN 201510545763 A CN201510545763 A CN 201510545763A CN 105158082 A CN105158082 A CN 105158082A
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- wedge shape
- metal pipe
- high temperature
- tension test
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Abstract
The invention discloses an auxiliary device for a metal pipe high-temperature tension test and an application method of the auxiliary device. The auxiliary device comprises a circular sleeve (1) with a through hole, wedge clamping blocks (2), a tightening circular block (3), a connecting rod (4) and a chock plug (5). The application method is characterized in that the high-temperature tension test needs two auxiliary devices, high-temperature-resistant soft material is wound at the outer end of each chock plug, the chock plugs are inserted into two ends of a metal pipe, the tightening circular blocks are screwed to push the two pairs of wedge clamping blocks to clamp the metal pipe, the chucks of a high-temperature tension test machine are clamped to the two connecting rods, the metal pipe and the two auxiliary devices are jointly placed into the constant-temperature area of a high-temperature furnace, the high-temperature furnace is heated to test temperature according to the requirements of the high-temperature tension test and the temperature is kept, the high-temperature tension test is performed under the test temperature, the two auxiliary devices are taken out when the auxiliary devices are cooled to room temperature after the high-temperature tension test, the tightening circular blocks are screwed to loosen the two pairs of wedge blocks, and then the metal pipe can be taken out. The auxiliary device is simple in structure and convenient to use.
Description
Technical field
The invention belongs to metal pipe material high temperature tension test technical field, be mainly concerned with a kind of servicing unit for metal pipe material high temperature tension test and using method.
Background technology
The high temperature tensile properties of metal pipe material weighs metal pipe material under specific temperature conditions, realize safe design and produce the basic index checked and accepted.The domestic high temperature tension test carrying out metal pipe material is generally tested according to GB/T4338 " Metal Materials At High Temperature stretching test method " at present, regulation is tested when the external diameter tubing be equal to or less than within the scope of 16mm should cut homogeneous tube, external diameter is greater than the tubing of 16mm to 30mm, when test condition allows, also homogeneous tube should be selected to test, otherwise the bar shaped that can cut width 10mm is tested.
In above-mentioned test, often produce following problem:
1) pin hole fixed form is taked at the two ends cuing open pipe sample, but for the sample of thin pipe wall, pin hole can be drawn out gap, causes test failure;
2) for the test that homogeneous tube carries out, because homogeneous tube sample is oversize, cause specimen temperature skewness, make sample produce nonaffine deformation in drawing process and cause test figure distortion, the waste of homogeneous tube material can be caused in addition.
In addition, if the length of homogeneous tube material not, above-mentioned test cannot be carried out.
Summary of the invention
For solving the problem, the invention provides a kind of servicing unit for metal pipe material high temperature tension test and using method, assistant apparatus structure is simple, assembling is flexible, the high temperature tension test of different-diameter scope metal pipe material can be adapted to, use procedure there will not be metal pipe material to produce inhomogeneous deformation phenomenon, improves the accuracy of high temperature tension test data.
For achieving the above object, the present invention adopts following technical scheme:
For servicing unit and the using method of metal pipe material high temperature tension test, the maximum outside diameter of setting metal pipe material is D>=30mm, minimum outer diameter is D
1≤ 16mm, the wall thickness of metal pipe material is ignored, high temperature tension test carries out and meets GB/T4338 " Metal Materials At High Temperature stretching test method " in high temperature furnace, and this servicing unit comprises through hole circular sleeve, wedge shape fixture block, holds out against nahlock, connecting link and chock plug, and feature of the present invention is as follows:
One end of through hole circular sleeve is provided with internal thread hole, the height of internal thread hole is 1/4 ~ 1/2 of through hole circular sleeve height overall, hold out against nahlock in falling gibbosity form, the maximum cylindrical holding out against nahlock is external thread, realizing holding out against nahlock by described external thread is screwed in internal thread hole, the big end surface center holding out against nahlock connects connecting link, the little end surface center holding out against nahlock connects chock plug, the internal diameter of the external diameter < metal pipe material of chock plug, the length of chock plug equals 1/2 ~ 3/4 of through hole circular sleeve height overall;
The other end of through hole circular sleeve is provided with interior semicircle wedge shape slideway, wherein the maximum end width of interior semicircle wedge shape slideway is equal with the nominal diameter of internal thread hole, the smallest end of interior semicircle wedge shape slideway is positioned at the end face of the through hole circular sleeve other end, identical but the wedge shape fixture block that installation direction is contrary of a pair structure is assembled in interior semicircle wedge shape slideway, wedge shape fixture block has outer semicircle wedge shape slideway and biting teeth, outer semicircle wedge shape slideway and interior semicircle wedge shape slideway mutually mate make a pair wedge shape fixture block can in interior semicircle wedge shape slideway relative sliding, biting teeth has 120 ° of angles, occlusion spacing>=D that its a pair biting teeth is formed when a pair wedge shape fixture block is in the deployed position of the maximum end of interior semicircle wedge shape slideway, occlusion spacing≤D that its a pair biting teeth is formed when a pair wedge shape fixture block is in the make-position of interior semicircle wedge shape slideway smallest end
1, the upper end of wedge shape fixture block is in the semi-conical of falling reduced, and the radius < of described semi-conical holds out against the radius of the little end surface of nahlock,
Said structure forms a set of servicing unit, two cover servicing units to be configured together use in high temperature tension test, first be wound around high temperature resistant soft material in the outer end of each chock plug, together with described flexible material, each chock plug is filled in metal pipe material two ends, guarantee that each chock plug will make metal pipe material produce relative sliding by Action of Gravity Field, now screw again and respectively hold out against nahlock and to promote two pairs of wedge shape fixture blocks, metal pipe material is clamped from two, then the chuck of high-temperature tensile testing machine is clamped in two and connects rod end, close in the flat-temperature zone together putting metal pipe material into high temperature furnace together with two cover servicing units burner hearth again, high temperature furnace is warming up to test temperature by high temperature tension test requirement and is incubated, high temperature tension test is carried out in test temperature, after high temperature tension test completes, grade two is overlapped when servicing unit is cooled to room temperature and is taken out, screw off and respectively hold out against nahlock and make two pairs of wedge shape fixture blocks be in relaxed state, again metal pipe material is taken out.
Owing to adopting technical scheme described above, the present invention produces following beneficial effect:
1, two cover servicing units of the present invention meet the requirement of GB/T4338-2006 " Metal Materials At High Temperature stretching test method " completely, can realize the high temperature tension test of different-diameter metal pipe material.
2, two cover servicing unit clamping metal pipe materials of the present invention are easy to operate, and in high temperature tension test process, metal pipe material can not produce relative sliding, and evenly, high temperature tension test result accurately and reliably in metal pipe material distortion.
Accompanying drawing explanation
Fig. 1 is the structural representation sketch that two cover servicing units specifically use;
Fig. 2 is the sectional view of circular sleeve;
Fig. 3 is the left pseudosection of Fig. 2;
Fig. 4 is the vertical view of Fig. 2;
Fig. 5 is the front view of a pair wedge shape fixture block;
Fig. 6 is the vertical view of Fig. 5;
In above-mentioned figure: 1-through hole circular sleeve; Semicircle wedge shape slideway in 1.1-; 1.2-internal thread hole; 2-wedge shape fixture block; The outer semicircle wedge shape slideway of 2.1-; 2.2-biting teeth; 3-holds out against nahlock; 4-connecting link; 5-chock plug; 6-metal pipe material; 7-high temperature furnace.
Embodiment
The present invention is a kind of servicing unit for metal pipe material high temperature tension test and using method, and the present invention can solve following problem:
1, tube wall is excessively thin when being not suitable for pin hole method of clamping, takes homogeneous tube to clamp and carries out high temperature tension test, ensure that the successful of high temperature tension test.
2, homogeneous tube stretches and there will not be inhomogeneous deformation phenomenon, improves the accuracy of high temperature tension test data.
3, the Design of length that stretches according to normal temperature of metal pipe material length, saves test material.
4, the high temperature tension test of different-diameter scope metal pipe material can be met.
First the maximum outside diameter setting metal pipe material is D>=30mm, minimum outer diameter is D
1≤ 16mm, the wall thickness of metal pipe material is ignored, and high temperature tension test carries out and meets GB/T4338 " Metal Materials At High Temperature stretching test method " in high temperature furnace.
Composition graphs 1-6, a set of servicing unit of the present invention comprises through hole circular sleeve 1, wedge shape fixture block 2, holds out against nahlock 3, connecting link 4 and chock plug 5, one end of through hole circular sleeve 1 is provided with internal thread hole 1.2, the other end of through hole circular sleeve 1 is provided with interior semicircle wedge shape slideway 1.1, identical but the wedge shape fixture block 2 that installation direction is contrary of a pair structure is assembled in interior semicircle wedge shape slideway 1.1, wedge shape fixture block 2 has outer semicircle wedge shape slideway 2.1 and biting teeth 2.2, the concrete structure of a set of servicing unit, with reference to described technical scheme, does not separately repeat.
Two cover servicing units to be configured together use in high temperature tension test, first be wound around high temperature resistant soft material in the outer end of each chock plug, together with described flexible material, each chock plug is filled in metal pipe material two ends, guarantee that each chock plug will make metal pipe material produce relative sliding by Action of Gravity Field, now screw again and respectively hold out against nahlock and to promote two pairs of wedge shape fixture blocks, metal pipe material is clamped from two, then the chuck of high-temperature tensile testing machine is clamped in two and connects rod end, close in the flat-temperature zone together putting metal pipe material into high temperature furnace together with two cover servicing units burner hearth again, high temperature furnace is warming up to test temperature by high temperature tension test requirement and is incubated, high temperature tension test is carried out in test temperature, after high temperature tension test completes, grade two is overlapped when servicing unit is cooled to room temperature and is taken out, screw off and respectively hold out against nahlock and make two pairs of wedge shape fixture blocks be in relaxed state, again metal pipe material is taken out.
Above-mentioned using method is a kind of summary just, and can have multiple using method according to the skill level that the concrete structure of servicing unit is combined, multiple using method also belongs to protection scope of the present invention, and all are as the criterion with easy use.
According to the high temperature tension test result reference data letter following table that the present invention carries out.
Use servicing unit of the present invention to carry out high temperature tension test all to obtain successfully, in high temperature tension test process, metal pipe material all produces without distortion, and test figure is accurate.
Claims (1)
1., for servicing unit and the using method of metal pipe material high temperature tension test, the maximum outside diameter of setting metal pipe material (6) is D>=30mm, minimum outer diameter is D
1≤ 16mm, the wall thickness of metal pipe material (6) is ignored, high temperature tension test carries out and meets GB/T4338 " Metal Materials At High Temperature stretching test method " in high temperature furnace (7), this servicing unit comprises through hole circular sleeve (1), wedge shape fixture block (2), holds out against nahlock (3), connecting link (4) and chock plug (5), it is characterized in that:
One end of through hole circular sleeve (1) is provided with internal thread hole (1.2), the height of internal thread hole (1.2) is 1/4 ~ 1/2 of through hole circular sleeve (1) height overall, hold out against nahlock (3) in falling gibbosity form, the maximum cylindrical holding out against nahlock (3) is external thread, realizing holding out against nahlock (3) by described external thread is screwed in internal thread hole (1.2), the big end surface center holding out against nahlock (3) connects connecting link (4), the little end surface center holding out against nahlock (3) connects chock plug (5), the internal diameter of the external diameter < metal pipe material of chock plug, the length of chock plug equals 1/2 ~ 3/4 of through hole circular sleeve height overall,
The other end of through hole circular sleeve (1) is provided with interior semicircle wedge shape slideway (1.1), wherein the maximum end width of interior semicircle wedge shape slideway (1.1) is equal with the nominal diameter of internal thread hole (1.2), the smallest end of interior semicircle wedge shape slideway (1.1) is positioned at the end face of through hole circular sleeve (1) other end, identical but the wedge shape fixture block (2) that installation direction is contrary of a pair structure is assembled in interior semicircle wedge shape slideway (1.1), wedge shape fixture block (2) has outer semicircle wedge shape slideway (2.1) and biting teeth (2.2), outer semicircle wedge shape slideway (2.1) and interior semicircle wedge shape slideway (1.1) are mated mutually makes a pair wedge shape fixture block (2) can at relative sliding in interior semicircle wedge shape slideway (1.1), biting teeth (2.2) has 120 ° of angles, occlusion spacing>=D that its a pair biting teeth (2.2) is formed when a pair wedge shape fixture block (2) is in the deployed position of the maximum end of interior semicircle wedge shape slideway (1.1), occlusion spacing≤D that its a pair biting teeth (2.2) is formed when a pair wedge shape fixture block (2) is in the make-position of interior semicircle wedge shape slideway (1.1) smallest end
1, the upper end of wedge shape fixture block (2) is in the semi-conical of falling reduced, and the radius < of described semi-conical holds out against the radius of the little end surface of nahlock,
Said structure forms a set of servicing unit, two cover servicing units to be configured together use in high temperature tension test, first be wound around high temperature resistant soft material in the outer end of each chock plug (5), together with described flexible material, each chock plug (5) is filled in metal pipe material (6) two ends, guarantee that each chock plug (5) will make metal pipe material (6) produce relative sliding by Action of Gravity Field, now screw again and respectively hold out against nahlock (3) and to promote two pairs of wedge shape fixture blocks (2), metal pipe material (6) is clamped from two, then the chuck of high-temperature tensile testing machine is clamped in two connecting link (4) ends, close in the flat-temperature zone together putting metal pipe material (6) into high temperature furnace (7) together with two cover servicing units burner hearth again, high temperature furnace (7) is warming up to test temperature by high temperature tension test requirement and is incubated, high temperature tension test is carried out in test temperature, after high temperature tension test completes, grade two is overlapped when servicing unit is cooled to room temperature and is taken out, screw off and respectively hold out against nahlock (3) and make two pairs of wedge shape fixture blocks (2) be in relaxed state, again metal pipe material (6) is taken out.
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| CN201510545763.9A CN105158082A (en) | 2015-08-31 | 2015-08-31 | Auxiliary device for metal pipe high-temperature tension test and application method of auxiliary device |
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| CN201510545763.9A CN105158082A (en) | 2015-08-31 | 2015-08-31 | Auxiliary device for metal pipe high-temperature tension test and application method of auxiliary device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510123A (en) * | 2016-01-28 | 2016-04-20 | 中国原子能科学研究院 | Clamp for thin-wall tube |
| CN108896386A (en) * | 2018-06-07 | 2018-11-27 | 中国船舶重工集团公司第七二五研究所 | A kind of clamping device and its application method of sheet metal drawing by high temperature sample |
| CN110806348A (en) * | 2019-11-28 | 2020-02-18 | 中国航发沈阳黎明航空发动机有限责任公司 | Clamp and method suitable for high-temperature stretching detection of small-specification metal pipe |
| CN113173611A (en) * | 2021-06-04 | 2021-07-27 | 上海蓝幸环保科技有限公司 | Sewage treatment plant convenient to installation |
| CN114166621A (en) * | 2021-12-08 | 2022-03-11 | 中航西安飞机工业集团股份有限公司 | Clamp for pipe tensile test and test method |
| CN117420012A (en) * | 2023-12-19 | 2024-01-19 | 泓欣科创生物科技(北京)有限公司 | Nerve sleeve tensile test tool and nerve sleeve tensile test method |
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| CN202267628U (en) * | 2011-08-26 | 2012-06-06 | 四川六合锻造股份有限公司 | Whole tube high-temperature stretching clamp |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510123A (en) * | 2016-01-28 | 2016-04-20 | 中国原子能科学研究院 | Clamp for thin-wall tube |
| CN108896386A (en) * | 2018-06-07 | 2018-11-27 | 中国船舶重工集团公司第七二五研究所 | A kind of clamping device and its application method of sheet metal drawing by high temperature sample |
| CN110806348A (en) * | 2019-11-28 | 2020-02-18 | 中国航发沈阳黎明航空发动机有限责任公司 | Clamp and method suitable for high-temperature stretching detection of small-specification metal pipe |
| CN113173611A (en) * | 2021-06-04 | 2021-07-27 | 上海蓝幸环保科技有限公司 | Sewage treatment plant convenient to installation |
| CN114166621A (en) * | 2021-12-08 | 2022-03-11 | 中航西安飞机工业集团股份有限公司 | Clamp for pipe tensile test and test method |
| CN117420012A (en) * | 2023-12-19 | 2024-01-19 | 泓欣科创生物科技(北京)有限公司 | Nerve sleeve tensile test tool and nerve sleeve tensile test method |
| CN117420012B (en) * | 2023-12-19 | 2024-03-15 | 泓欣科创生物科技(北京)有限公司 | Nerve sleeve tensile test tool and nerve sleeve tensile test method |
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Application publication date: 20151216 |